Despite the prominence of JavaScript, JetBrains declares Java to be the most popular language. Its reasoning is that JavaScript scores highly because so many developers have to tangle with it as part of a project, but if you dig into where they spend most time, the numbers decline sharply. In 2019 the survey showed that only 17 per cent of developers have JavaScript as their sole language, whereas this is true of 44 per cent of Java devs. It is a useful corrective to the notion that JavaScript is taking over. Python is growing too, and has overtaken Java this year in the list of "languages used in the last 12 months."